10月21日，市民在第十一屆中國（蕪湖）科普產品博覽交易會上體驗C919大飛機模擬駕駛艙。當日，第十一屆中國（蕪湖）科普產品博覽交易會在安徽省蕪湖市舉行。[新華社記者 杜宇 攝]

People try a simulated cockpit of the C919 large passenger aircraft during the 11th China (Wuhu) Popularized Science Products Exposition in Wuhu, east China's Anhui Province, Oct. 21, 2023. The expo kicked off here on Saturday. (Xinhua/Du Yu)